<template>
    <div class="todo-header">
        <input 
        type="text"
        v-model="todoName"
        placeholder="请输入你的任务名称，按回车确认"
        @keyup.enter="add"
        />
    </div>
</template>

<script>
export default {
    name:"TodoHeader",
    props:{
        addTodo:{
            type:Function,
            required:true,
        },
    },
    data(){
        return{
            todoName:"",
        }
    },
    methods:{
        add(){
            const{todoName}=this
            if(!todoName){
                alert('请输入你的任务名称')
                return
            }
            this.addTodo(todoName)
            this.todoName = ''
        }
    }
}
</script>

<style>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>